/*
** 2390.c
** 
** Made by (seakage2h)
** Login   <seakage2h@seakage2h-ubuntu>
** 
** Started on  Wed Sep 24 20:05:05 2008 seakage2h
** Last update Sun May 12 01:17:25 2002 Speed Blue
*/

/* #include "2390.h" */
#include <stdio.h>
#include <math.h>

int main()
{
     int origin, y;
     float rate, cum_rate = 1;

     scanf("%f%d%d", &rate, &origin, &y);

     rate = 1 + rate/100;
     
     while(y){
	  cum_rate *= rate;
	  y--;
     }

     printf("%.lf\n", floor(origin * cum_rate));

     return 0;
}

	  
